Submitted for Publication: December 8, 2013; final revision received February 3, 2014; accepted February 9, 2014.
Published Online: June 5, 2014. doi:10.1001/jamaophthalmol.2014.1093.
Study concept and design: Shams, Wormald, McNab, Selva.
Acquisition, analysis, or interpretation of data: Shams, Chen, Wormald, Sloan, Wilcsek, McNab.
Drafting of the manuscript: Shams, Chen.
Critical revision of the manuscript for important intellectual content: Shams, Wormald, Sloan, Wilcsek, McNab, Selva.
Statistical analysis: Shams.
Administrative, technical, or material support: Chen, Wormald, Sloan.
Study supervision: Chen, Wormald, Sloan, McNab, Selva.
Conflict of Interest Disclosures: None reported.
Previous Presentation: An oral presentation of this study was given at the British Oculoplastic Surgeons Society Meeting; June 20, 2013; Bristol, England.
Additional Contributions: Edwin Figueira, BBS, MS, Oculoplastic Unit, Department of Ophthalmology, Prince of Wales Hospital, Randwick, New South Wales, Australia, assisted with the collection of data for this study. No financial compensation was given.